<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="10">
          <el-input placeholder="请输入内容"
                    v-model="usersInfo.query"
                    clearable
                    @clear="getUsers">
            <el-button slot="append" icon="el-icon-search"
                       @click="getUsers"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialog = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="usersList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state"
                       @change="userStateChange(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" circle size="small"
                       @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger"
                       icon="el-icon-delete"
                       circle size="small"
                       @click="removeUsers(scope.row.id)"></el-button>
            <!-- 分配按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning"
                         icon="el-icon-star-off"
                         circle size="small"
                         @click="setRoles(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="usersInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="usersInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialog"
      width="50%"
      @close="addDialogClosed">
      <!-- 内容主题区域 -->
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" type="password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialog = false">取 消</el-button>
        <el-button type="primary" @click="addUsers">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialog"
      width="50%"
      @close="editDialogClosed">
      <el-form
            :model="editForm"
            :rules="editFormRules"
            ref="editFormRef"
            label-width="70px">
        <!-- 用户名 -->
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <!-- 邮箱 -->
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <!-- 手机 -->
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialog = false">取 消</el-button>
        <el-button type="primary" @click="editUsers">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRolesDialog"
      width="50%"
      @close="clearRolesDialog">
      <div>
        <p>当前用户: {{userInfo.username}}</p>
        <p>当前角色: {{userInfo.role_name}}</p>
        <p>分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRolesDialog = false">取 消</el-button>
        <el-button type="primary" @click="changeRoles">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
/* eslint-disable */
export default {
  data() {
    //验证邮箱的规则
    var checkEmail = (rules, value, cb) => {
      //验证邮箱的正则表达
      const regEmail = /^\w+@\w+(\.\w+)+$/

      if(regEmail.test(value)) {
        //合法邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱地址'))
    }

    //验证手机号的规则
    var checkMobile = (rules, value, cb) => {
      //验证手机号的正则表达式
      const regMobile = /^1[34578]\d{9}$/

      if(regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }

    return {
      // 获取用户列表的参数对象
      usersInfo: {
        query: '',
        //当前页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 2
      },
      usersList: [],
      total: 0,
      //控制添加对话框的显示与隐藏
      addDialog: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      //添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名长度在3-10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '密码长度在6-15个字符之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: ['blur', 'change'] }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      //控制修改用户对话框的显示与隐藏
      editDialog: false,
      //查询到的用户信息对象
      editForm: {},
      //修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱地址', trigger: 'blur' },
          { validator: checkEmail, trigger: ['blur', 'change'] }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      //控制分配角色框显示与隐藏
      setRolesDialog: false,
      //需要被分配角色的用户信息
      userInfo: {},
      //所有角色的数据列表
      rolesList: [],
      //已选择的角色id名称
      selectedRoleId: ''
    }
  },
  created() {
    this.getUsers()
  },
  methods: {
    async getUsers() {
      const {data: res} = await this.$http.get('users', {
        params: this.usersInfo
      })
      if(res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      this.usersList = res.data.users
      this.total = res.data.total
      console.log(res);
    },
    //监听 pagesize改变的事件
    handleSizeChange(newSize) {
      this.usersInfo.pagesize = newSize
      //重新获取数据
      this.getUsers()
    },
    //监听页码值改变的事件
    handleCurrentChange(newPage) {
      this.usersInfo.pagenum = newPage
      //重新获取数据
      this.getUsers()
    },
    //监听swich开关状态的改变
    async userStateChange(usersinfo) {
      const {data: res} = await this.$http.put(`users/${usersinfo.id}/state/${usersinfo.mg_state}`)
      if(res.meta.status !== 200) {
        usersinfo.mg_state = !usersinfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    //监听用户对话框的关闭事件
    addDialogClosed() {
      //重置表单
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮添加新用户
    addUsers() {
      this.$refs.addFormRef.validate(async valid => {
        if(!valid) {
          return
        }
        //可以发起添加用户的网络请求
        const {data: res} = await this.$http.post('users', this.addForm)
        if(res.meta.status !== 201) {
          return this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        //隐藏添加用户的对话框
        this.addDialog = false
        //重新获取用户列表数据
        this.getUsers()
      })
    },
    //展示编辑用户对话框
    async showEditDialog(id) {
      const {data: res} = await this.$http.get('users/' + id)
      if(res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialog = !this.editDialog
    },
    //监听修改对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUsers() {
      this.$refs.editFormRef.validate(async valid => {
        if(!valid) {
          return
        }
        //发起修改用户信息的请求
        const {data: res} = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if(res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败')
        }
        //关闭对话框
        this.editDialog = false
        //刷新用户列表
        this.getUsers()
        //提示修改成功
        this.$message.success('更新用户信息成功')
      })
    },
    //根据id删除用户信息
    async removeUsers(id) {
      //弹框询问
      const confirmResult = await this.$confirm('确定永久删除该用户信息吗?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      //如果用户确定删除 返回字符串confirm
      //如果用户取消删除 返回字符串cancel
      if(confirmResult !== 'confirm') {
        return this.$message.info('已取消删除用户操作')
      }
      const {data: res} = await this.$http.delete('users/' + id)
      if(res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('删除用户成功')
      //刷新数据列表
      this.getUsers()
    },
    //展示分配角色对话框
    async setRoles(userInfo) {
      this.userInfo = userInfo
      //在展示对话框之前，获取所有角色的列表
      const {data: res} = await this.$http.get('roles')
      if(res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
      this.setRolesDialog = true
    },
    //点击确定按钮分配角色
    async changeRoles() {
      if(!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      console.log(res);
      if(res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }
      this.$message.success('更新角色成功')
      this.getUsers()
      this.setRolesDialog = false
    },
    //监听分配角色对话框的关闭事件
    clearRolesDialog() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>
</style>
